Chemoselective hydrogenation of nitro compounds to the corresponding amines on Raney® copper catalysts

被引:0
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作者
Robitaille, Simon [1 ]
Clement, Genevieve [1 ]
Chapuzet, Jean Marc [1 ]
Lessard, Jean [1 ]
机构
[1] Univ Sherbrooke, Lab Chim & Electrochim Organ, Dept Chim, Sherbrooke, PQ J1K 2R1, Canada
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中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The selectivity of the electrocatalytic hydrogenation (ECH) method for the reduction of nitro compounds to the corresponding amines is compared with that of reduction by Raney copper (RCu) alloy powder in alkaline aqueous ethanol. In the former method, chemisorbed hydrogen is generated in situ by electrochemical reduction of water. In the latter method (termed "chemical catalytic hydrogenation" (CCH)), chemisorbed hydrogen is also generated in situ but by reduction of water by aluminium (by leaching of the alloy). Finally, the selectivity and efficiency of the electrochemical reduction of 5-nitro-indoles, -benzofurane, and -benzothiophene at RCu electrodes in neutral and alkaline aqueous ethanol is compared with that of the classical reduction with zinc in acidic medium.
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页码:281 / +
页数:3
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